1cmake_minimum_required(VERSION 2.4.4...3.15.0)
2set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS ON)
3
4project(zlib C)
5
6set(VERSION "1.3.1")
7
8option(ZLIB_BUILD_EXAMPLES "Enable Zlib Examples" ON)
9
10set(INSTALL_BIN_DIR "${CMAKE_INSTALL_PREFIX}/bin" CACHE PATH "Installation directory for executables")
11set(INSTALL_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib" CACHE PATH "Installation directory for libraries")
12set(INSTALL_INC_DIR "${CMAKE_INSTALL_PREFIX}/include" CACHE PATH "Installation directory for headers")
13set(INSTALL_MAN_DIR "${CMAKE_INSTALL_PREFIX}/share/man" CACHE PATH "Installation directory for manual pages")
14set(INSTALL_PKGCONFIG_DIR "${CMAKE_INSTALL_PREFIX}/share/pkgconfig" CACHE PATH "Installation directory for pkgconfig (.pc) files")
15
16include(CheckTypeSize)
17include(CheckFunctionExists)
18include(CheckIncludeFile)
19include(CheckCSourceCompiles)
20enable_testing()
21
22check_include_file(sys/types.h HAVE_SYS_TYPES_H)
23check_include_file(stdint.h    HAVE_STDINT_H)
24check_include_file(stddef.h    HAVE_STDDEF_H)
25
26#
27# Check to see if we have large file support
28#
29set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE64_SOURCE=1)
30# We add these other definitions here because CheckTypeSize.cmake
31# in CMake 2.4.x does not automatically do so and we want
32# compatibility with CMake 2.4.x.
33if(HAVE_SYS_TYPES_H)
34    list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_SYS_TYPES_H)
35endif()
36if(HAVE_STDINT_H)
37    list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDINT_H)
38endif()
39if(HAVE_STDDEF_H)
40    list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDDEF_H)
41endif()
42check_type_size(off64_t OFF64_T)
43if(HAVE_OFF64_T)
44   add_definitions(-D_LARGEFILE64_SOURCE=1)
45endif()
46set(CMAKE_REQUIRED_DEFINITIONS) # clear variable
47
48#
49# Check for fseeko
50#
51check_function_exists(fseeko HAVE_FSEEKO)
52if(NOT HAVE_FSEEKO)
53    add_definitions(-DNO_FSEEKO)
54endif()
55
56#
57# Check for unistd.h
58#
59check_include_file(unistd.h Z_HAVE_UNISTD_H)
60
61if(MSVC)
62    set(CMAKE_DEBUG_POSTFIX "d")
63    add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
64    add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
65    include_directories(${CMAKE_CURRENT_SOURCE_DIR})
66endif()
67
68if(NOT CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR)
69    # If we're doing an out of source build and the user has a zconf.h
70    # in their source tree...
71    if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h)
72        message(STATUS "Renaming")
73        message(STATUS "    ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h")
74        message(STATUS "to 'zconf.h.included' because this file is included with zlib")
75        message(STATUS "but CMake generates it automatically in the build directory.")
76        file(RENAME ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h.included)
77  endif()
78endif()
79
80set(ZLIB_PC ${CMAKE_CURRENT_BINARY_DIR}/zlib.pc)
81configure_file( ${CMAKE_CURRENT_SOURCE_DIR}/zlib.pc.cmakein
82		${ZLIB_PC} @ONLY)
83configure_file(	${CMAKE_CURRENT_SOURCE_DIR}/zconf.h.cmakein
84		${CMAKE_CURRENT_BINARY_DIR}/zconf.h @ONLY)
85include_directories(${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_SOURCE_DIR})
86
87
88#============================================================================
89# zlib
90#============================================================================
91
92set(ZLIB_PUBLIC_HDRS
93    ${CMAKE_CURRENT_BINARY_DIR}/zconf.h
94    zlib.h
95)
96set(ZLIB_PRIVATE_HDRS
97    crc32.h
98    deflate.h
99    gzguts.h
100    inffast.h
101    inffixed.h
102    inflate.h
103    inftrees.h
104    trees.h
105    zutil.h
106)
107set(ZLIB_SRCS
108    adler32.c
109    compress.c
110    crc32.c
111    deflate.c
112    gzclose.c
113    gzlib.c
114    gzread.c
115    gzwrite.c
116    inflate.c
117    infback.c
118    inftrees.c
119    inffast.c
120    trees.c
121    uncompr.c
122    zutil.c
123)
124
125if(NOT MINGW)
126    set(ZLIB_DLL_SRCS
127        win32/zlib1.rc # If present will override custom build rule below.
128    )
129endif()
130
131# parse the full version number from zlib.h and include in ZLIB_FULL_VERSION
132file(READ ${CMAKE_CURRENT_SOURCE_DIR}/zlib.h _zlib_h_contents)
133string(REGEX REPLACE ".*#define[ \t]+ZLIB_VERSION[ \t]+\"([-0-9A-Za-z.]+)\".*"
134    "\\1" ZLIB_FULL_VERSION ${_zlib_h_contents})
135
136if(MINGW)
137    # This gets us DLL resource information when compiling on MinGW.
138    if(NOT CMAKE_RC_COMPILER)
139        set(CMAKE_RC_COMPILER windres.exe)
140    endif()
141
142    add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
143                       COMMAND ${CMAKE_RC_COMPILER}
144                            -D GCC_WINDRES
145                            -I ${CMAKE_CURRENT_SOURCE_DIR}
146                            -I ${CMAKE_CURRENT_BINARY_DIR}
147                            -o ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
148                            -i ${CMAKE_CURRENT_SOURCE_DIR}/win32/zlib1.rc)
149    set(ZLIB_DLL_SRCS ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj)
150endif(MINGW)
151
152add_library(zlib SHARED ${ZLIB_SRCS} ${ZLIB_DLL_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
153target_include_directories(zlib PUBLIC ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
154add_library(zlibstatic STATIC ${ZLIB_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
155target_include_directories(zlibstatic PUBLIC ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
156set_target_properties(zlib PROPERTIES DEFINE_SYMBOL ZLIB_DLL)
157set_target_properties(zlib PROPERTIES SOVERSION 1)
158
159if(NOT CYGWIN)
160    # This property causes shared libraries on Linux to have the full version
161    # encoded into their final filename.  We disable this on Cygwin because
162    # it causes cygz-${ZLIB_FULL_VERSION}.dll to be created when cygz.dll
163    # seems to be the default.
164    #
165    # This has no effect with MSVC, on that platform the version info for
166    # the DLL comes from the resource file win32/zlib1.rc
167    set_target_properties(zlib PROPERTIES VERSION ${ZLIB_FULL_VERSION})
168endif()
169
170if(UNIX)
171    # On unix-like platforms the library is almost always called libz
172   set_target_properties(zlib zlibstatic PROPERTIES OUTPUT_NAME z)
173   if(NOT APPLE AND NOT(CMAKE_SYSTEM_NAME STREQUAL AIX))
174     set_target_properties(zlib PROPERTIES LINK_FLAGS "-Wl,--version-script,\"${CMAKE_CURRENT_SOURCE_DIR}/zlib.map\"")
175   endif()
176elseif(BUILD_SHARED_LIBS AND WIN32)
177    # Creates zlib1.dll when building shared library version
178    set_target_properties(zlib PROPERTIES SUFFIX "1.dll")
179endif()
180
181if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
182    install(TARGETS zlib zlibstatic
183        RUNTIME DESTINATION "${INSTALL_BIN_DIR}"
184        ARCHIVE DESTINATION "${INSTALL_LIB_DIR}"
185        LIBRARY DESTINATION "${INSTALL_LIB_DIR}" )
186endif()
187if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
188    install(FILES ${ZLIB_PUBLIC_HDRS} DESTINATION "${INSTALL_INC_DIR}")
189endif()
190if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
191    install(FILES zlib.3 DESTINATION "${INSTALL_MAN_DIR}/man3")
192endif()
193if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
194    install(FILES ${ZLIB_PC} DESTINATION "${INSTALL_PKGCONFIG_DIR}")
195endif()
196
197#============================================================================
198# Example binaries
199#============================================================================
200if(ZLIB_BUILD_EXAMPLES)
201    add_executable(example test/example.c)
202    target_link_libraries(example zlib)
203    add_test(example example)
204
205    add_executable(minigzip test/minigzip.c)
206    target_link_libraries(minigzip zlib)
207
208    if(HAVE_OFF64_T)
209        add_executable(example64 test/example.c)
210        target_link_libraries(example64 zlib)
211        set_target_properties(example64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
212        add_test(example64 example64)
213
214        add_executable(minigzip64 test/minigzip.c)
215        target_link_libraries(minigzip64 zlib)
216        set_target_properties(minigzip64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
217    endif()
218endif()
219